Question

what ports do I block to stop spam/virus sending out over my network

Asked by: SM17CH

Hi guys,

I have a VoIP Trixbox server on its own internet connection, recently it's connection was blocked from the ISP for distributing Spam/Virus, I know that I must find the source of this and remove it, but every time the connection is unblocked it is quickly blocked again for spam/virus.

I was wondering if there are any outgoing ports other than SMTP that should be blocked on the firewall.

I just need the connection to be up while I find the source of the spam.

any ideas on locating the source of the spam on a linux box would be a great help too, I only have a fairly basic linux knowledge.  I have run chkrootkit on it and this didnt solve the problem, I tried to install an anti virus program through the command line but could not get it to function.

any help would be great

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Asked On
2008-10-22 at 16:22:13ID23839082
Topics

Linux

,

Anti-Spam Email Software

,

Operating Systems Network Security

Participating Experts
6
Points
500
Comments
12

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Answers

 

Accepted Solution

by: emcePosted on 2008-10-22 at 16:38:54ID: 22782208

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Expert Comment

by: SM17CHPosted on 2008-10-22 at 18:15:52ID: 22782648

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Assisted Solution

by: KeremEPosted on 2008-10-22 at 20:08:30ID: 22783009

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Expert Comment

by: edster9999Posted on 2008-10-23 at 05:13:31ID: 22785214

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Assisted Solution

by: yuriskPosted on 2008-10-24 at 07:09:11ID: 22796332

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Expert Comment

by: richrumblePosted on 2008-10-24 at 07:37:28ID: 22796693

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Assisted Solution

by: DevMatrixPosted on 2008-10-24 at 15:10:43ID: 22800511

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Expert Comment

by: KeremEPosted on 2008-10-24 at 16:28:11ID: 22800851

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Expert Comment

by: richrumblePosted on 2008-10-24 at 17:26:27ID: 22801061

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